Re: XP Pro only seeing 2gb of my 4gb ram?
- From: cephia <cephia@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 2 Aug 2007 19:14:01 -0700
well.. that certinly seems odd... the first configuration may be dual channel
on some mobos tho(those that alternate slots, so that 1,3.. and 2,4 run dual
channel togeather)
the extra quarter gig is neat also, with 3g installed in my system(depending
on how i'm currently shuffling bios settings) i see between 2.5 and 2.75g
i know that .25g of it is reserved for video(with my video cards(atleast if
the addressing issues come into play with under 4g while being over 2g)) and
i can see how the settings i've been shuffling around can alter the rest..but
i still cant understand why, if i run all 4g.. the system only utilizes 2g of
it..... it recognises 4g available, but refuses to address anything above
that 2g barrier
"Phil Latio" wrote:
Well, I thought it may be of benefit to post back what I've done and.
the outcome...
I followed cephia's suggestion and mixed the memory modules so they
weren't using the Dual Channel mode.
Guess what, System Properties and Task Manager (Performance) both
indicated 2.25GB of RAM - wahoo I've gained an extra quarter of a
Gig!!
But get this...
When I mix the modules in the following configurations here's the
results:
512mb 1Gb 512mb 1Gb ===> Task Manager(Performance) reports 2GB
1Gb 512mb 512mb 1Gb ===> Task Manager(Performance) reports 2.25GB
This just gets weirder and weirder.
Anyhow, I don't whether to be happy I've gained the quarter Gig and
just accept it or be a little less annoyed that I;m not able to see
the full 3Gb I'd expected.
Thanks for the pointers cephia.
Cheers
Phil
On 2 Aug, 09:43, Phil Latio <phil.la...@xxxxxxxxxxx> wrote:
Ah, that's a good point about the dual channel mode - I'll give that a
go and see what happens.
I've just re-read my posting of last night and see I omitted the part
explaining why I updated my BIOS.
Part of my Googling had returned some suggestions as to enabling the
'memory hole' feature in the BIOS - apparently this feature had given
others the result they wanted.
I'd observed there wasn't such a feature in my existing BIOS settings,
so updated it to the latest version only to find the feature doesn't
appear to be there in the new BIOS version (or if it is, I haven't
found it!).
I understand from one posting somewhere, a guy had a similar issue
(same motherboard as mine) and ASRock Technical Support had provided a
'custom' BIOS, after emailing them the issue. I may eventually go that
route and make enquiries.
One thing for sure though - I know a lot more about hardware now than
I did a few days ago. I recollect a phrase I once heard - along the
lines of "If you truly want to know how something works, try fixing
it".
Anyhow - thanks for the pointers/suggestions. I hope to get my full
quota of3GB, otherwise my virtual machines will just have to have
what's available (and now I've just discovered VPC 2007 hasn't got USB
support which is another opportunity to tax the mind...hey-ho, I just
love all this technology!)
;-)
Thanks
Phil
On 1 Aug, 22:18,cephia<cep...@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
no answer as of yetPhil, and you hit the nail on the head with how weird
this is.. every post i've found online shows people having 3.x+ of their 4g
registering..but now your problem puts a slightly new twist on it.
is yourramrunning in dual channel mode?
perhaps it is something with how windows reacts with over 2g of dual channelram?
I have 1 last thing to try before i install my vista 64 ultimate, and that
is a bios update(my bios is currently 1 version out of date) and switching
from useing JDmicron raid drivers over to a Nvidia raid setup.
i know past verisons of jdmicron drivers have occasonally caused some weird
problems with windows, but i'm just really out of patience trying to figure
this out
the only thing that makes sense to me now is that it has to do with Dual
Channelram..(I put 2 of my sticks into my brothers comp, but his system
didnt run dual channel with 4 sticks in it.. his copy of xppro recognised
3.45g of the 4 then installed.. i really need to head overthere with all 4 of
my sticks and see if i can replicate the problem on his comp too)
bah.. well.. i'm done rambling fornow
you could try ofsetting your 1g sticks and 512meg sticks so they dont run in
dual channel (match channels with a 1g +512) and see if you have any luck
that way
good luckPhil
"PhilLatio" wrote:
Hicephia
Did you ever get an answer to your query?
I ask because I have increased myRAMfrom 1GB to3GB(specs below) in
order to dive inand get to know all about VirtualPC 2007.
I have 2 x 512MB and 2 x 1GB memory configuration. My BIOS sees the
memory configuration correctly, memtest confirms the sticks are
working correctly, yet;
Task Manager > Performance tab, reports Physical memory being 2GB.
System Properties reports '2GB - Physical Address Extension'
I have modified the Boot.INI and added the /3GBswitch, I've upgraded
the mobo BIOS to it's most recent version (a process that had me on
the seat of my pants, holding my breath for 5 minutes!!)
My machine spec is as follows;
Motherboard - ASRock 939S56-M
Processor - AMD Athlon 64 x2 4200+
O/S - Win XP Pro SP2 (patched as at last 'MS patch tuesday')
Memory is: Pair 512MB DDR3200 sticks and pair 1GB DDR3200 sticks
(total memory3GB)
1 x Maxtor 80GB SATA drive (contains OS)
1 x Maxtor 250GB SATA drive (3 partitions - 6GB swap/pageing file,
15GB Applications partition, 220GB Data partition)
Graphics card - NVIDIA GeForce 6200 TurboCache Video card - this takes
256MB ofRAM
As I'm doing some extensive Googling of this issue, what I'm finding
hard to stomach is that despite having3GBI don't know if the OS is
aware of the3GB- it seems not, judging by the Task Manager
Performance tab and System Properties. I'm also curious as to how the
numerous people, who've queried why 4GB is never seen as the full 4GB,
still get their systems to report 3.6GB for example. Ii understand why
4GB is never reported, but am at a loss to undertand why3GBis not
reported!
As I mentioned earlier, I purposely increased theRAMin order to
dabble with virtualisation - to that end I would appreciate any
pointers as to how I can get the3GBto be recognised.
Thanks in advance.
Phil
On 7 Jul, 01:50,cephia<cep...@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
I"m having a weird little problem with this current config.
AMD X2 5200+
ECS KN3 SLI2 nvidia590sli mobo4gb(2x2gb dual channel kits) OCZ Platinum Rev.2 (ddr2 800)xppro.. sp2
Trying different combos I've found out following:
InXPpro(32bit) 2G of myramis gone. Bios sees it, 3D Mark,Sandra, and
cpuz see it as installed properly, butWindowssees it as 2G.
Now it gets funky... I remove one stick ofram, leaving it to 3G,
single-channel mode (dual channel got disabled)...Windowsnow sees ~2.75G of
ram,
I'd be very happy to have even 3.6G of that 4G total
so the question becomes....
is there a way to makewindowsrecognise/use theramwith all 4 sticks
installed.. or should i just stick with 3 sticks for morerecognisedram
until i can upgrade to 64bit?- Hide quoted text -
- Show quoted text -- Hide quoted text -
- Show quoted text -
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